Garmin 396 Glitch??

Has anyone experienced significant "loss of signal" hiccups with their
new 396?? Since getting ours a few months ago, we have had
several...some lasting 15-20 minutes. System shutdowns/start ups may
or may not re-initialize it. THe antenna is unobstructed and in plain
view of the sky. An older Garmin is still in our plane and works fine
so its not some GPS system glitch.

I've thought about re-installing the software. There is a new upgrade
on the Garmin site so it wouldn't hurt, but none of the fixes address
any "loss of signal" problems.

Any similar experiences out there???

Thanks!!!